Fan



FIG. 1 is a perspective view of a fan showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof; the left side view being a mirror image;

FIG. 5 is a top plan view thereof; the bottom plan view being a mirror image; and,

FIG. 6 is another perspective view thereof taken from alternative position. 

CLAIM The ornamental design for a fan, as shown and described. 